Article

Diaquabis(N,N-diethylnicotinamide-κN1)bis[4-(dimethylamino)benzoato-κO]cobalt(II)

Acta Crystallographica Section E 01/2009;
Source: DOAJ

ABSTRACT The title CoII complex, [Co(C9H10NO2)2(C10H14N2O)2(H2O)2], is centrosymmetric. It contains two dimethylaminobenzoate (DMAB) and two diethylnicotinamide (DENA) ligands and two water molecules, all of them being monodentate. The four O atoms in the equatorial plane around the Co atom form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination is completed by the two pyridine N atoms of DENA ligands with the Co—N distance of 2.1519 (11) Å in the axial positions. The Co atom is displaced out of the least-squares plane of the carboxylate group by −0.781 (1) Å. The dihedral angle between the carboxylate group and the adjacent benzene ring is 5.05 (7)°, while the pyridine and benzene rings are oriented at a dihedral angle of 71.48 (5)°. In the crystal structure, intermolecular O—H...O and C—H...O hydrogen bonds link the molecules into a three-dimensional network. Two weak C—H...π interactions are also present.

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Keywords

adjacent benzene ring
 
axial positions
 
benzene rings
 
carboxylate group
 
Co atom
 
Co atom form
 
Co—N distance
 
crystal structure
 
C—H...O hydrogen bonds link
 
dimethylaminobenzoate
 
distorted octahedral coordination
 
distorted square-planar arrangement
 
equatorial plane
 
four O atoms
 
molecules
 
three-dimensional network
 
title CoII complex
 
two pyridine N atoms
 
water molecules
 
weak C—H...π interactions